Concentrations of metabolites, growth, and dichlorobenzene formation in cultures initially supplied with 10 mM pyruvate in Ti(III)-reduced medium containing 20 μM sulfide as a source of sulfur. Symbols: (A) ○, pyruvate; □, acetate; ▿, formate; ▵, propionate; ⊕, methane; (B) ⧫, formation of dichlorobenzenes; •, protein; ▪, hydrogen. Methane and hydrogen data are given as the nominal concentrations. Data are means of triplicate cultures; standard deviations were below 10%.